main.go

package main

import (
	"crypto/ecdsa"
	"fmt"
	"log"

	"github.com/ethereum/go-ethereum/common/hexutil"
	"github.com/ethereum/go-ethereum/crypto"
	"golang.org/x/crypto/sha3"
)

func main() {
	// 生成随机私钥
	privateKey, err := crypto.GenerateKey()
	if err != nil {
		log.Fatal(err)
	}

	// 使用FromECDSA方法将其转换为字节
	privateKeyBytes := crypto.FromECDSA(privateKey)
	// 使用go-ethereumhexutil包将它转换为十六进制字符串
	fmt.Println(hexutil.Encode(privateKeyBytes)) // 0xfad9c8855b740a0b7ed4c221dbad0f33a83a49cad6b3fe8d5817ac83d38b6a19

	// 使用Public方法获取公钥
	publicKey := privateKey.Public()
	publicKeyECDSA, ok := publicKey.(*ecdsa.PublicKey)
	if !ok {
		log.Fatal("cannot assert type: publicKey is not of type *ecdsa.PublicKey")
	}

	publicKeyBytes := crypto.FromECDSAPub(publicKeyECDSA)
	fmt.Println(hexutil.Encode(publicKeyBytes)) // 9a7df67f79246283fdc93af76d4f8cdd62c4886e8cd870944e817dd0b97934fdd7719d0810951e03418205868a5c1b40b192451367f28e0088dd75e15de40c05

	// 使用PublicKeyToAddress方法获取地址
	address := crypto.PubkeyToAddress(*publicKeyECDSA).Hex()
	fmt.Println(address) // 0x96216849c49358B10257cb55b28eA603c874b05E

	// 公共地址其实就是公钥的Keccak-256哈希，最后40个字符（20个字节）并用“0x”作为前缀
	hash := sha3.NewLegacyKeccak256()
	hash.Write(publicKeyBytes[1:])
	fmt.Println(hexutil.Encode(hash.Sum(nil)[12:])) // 0x96216849c49358b10257cb55b28ea603c874b05e
}